Hi Streets,
I dont think this is the case.
Same code executes nicely If I call that method in the onCreate()
method (i.e. main thread itself)
problem occurs in the Object creation if I will call this method
readTheFile() in the Thread.
Can you give any info. regarding how I can define Looper and Handler
in my code to execute it without any error.???
On Apr 7, 7:00 pm, Streets Of Boston <flyingdutc...@gmail.com> wrote:
> It could be that during the construction of class test.check.Test1, a
> Handler or something similar (i.e. something needing the main-thread's
> message-queue) is constructed. Look at your test.check.Test1
> implementation and see if this is the case.
>
> If this is the case, you will get an exception if the constructor of
> test.check.Test1 is executed on any other thread than the main-thread
> with the message queue.
>
> You would have gotten the same exception if you would have called 'new
> test.check.Test1()'.
>
> On Apr 7, 9:17 am, Ask <asifk1...@gmail.com> wrote:
>
>
>
> > Is there any handler needed for that?? Any Idea???
>
> > On Apr 7, 3:58 pm, Ask <asifk1...@gmail.com> wrote:
>
> > > Hi,
>
> > > I am using Reflection APIs in the background thread to call a method
> > > dynamically from another application but I am getting the Exception:
>
> > > "java.lang.RuntimeException: Can't create handler inside thread that
> > > has not called Looper.prepare() "
>
> > > at a line : Object o = c.newInstance();
>
> > > my code in the Thread is as follows,
> > > onCreate
>
> > > public void onCreate(Bundle icicle) {
> > > super.onCreate(icicle);
> > > setContentView(R.layout.main);
>
> > > hh_text = (TextView)findViewById(R.id.server_start);
>
> > > Thread t = new Thread()
> > > {
> > > public void run()
> > > {
> > > readTheFile();
>
> > > }
>
> > > };
> > > t.start();
> > > }
>
> > > public void readTheFile() {
> > > try {
>
> > > PathClassLoader loader = new PathClassLoader( "/sdcard/
> > > test.check.apk", ClassLoader.getSystemClassLoader());
> > > Class c = null;
>
> > > c = loader.loadClass("test.check.Test1");
>
> > > Log.i("See"," Test Class Found ....");
>
> > > Method method = c.getMethod("xyz", null);
>
> > > Object o = c.newInstance(); // This line throws exception
> > > String s = (String) method.invoke(o);
> > > Log.i("See","Got method: " + s);
> > > } catch (Exception e) {
> > > // TODO Auto-generated catch block
> > > e.printStackTrace();
> > > } }
>
> > > Please help.. If you know the issue.
>
> > > On Apr 6, 7:14 pm, Ask <asifk1...@gmail.com> wrote:
>
> > > > Thanx Mark for your quick reply. I will try it out and get back
>
> > > > On Apr 6, 6:49 pm, Mark Murphy <mmur...@commonsware.com> wrote:
>
> > > > > Asif k wrote:
> > > > > > But in my case, I am getting all 3 messages at a time after
> > > > > > activity execution completed.
>
> > > > > That is probably because you are doing long-running work on the UI
> > > > > thread.
>
> > > > > > Is there any API available, using which
> > > > > > I can show the status during the execution also.
>
> > > > > Anything long-running should be in a background thread, in the
> > > > > activity
> > > > > or wrapped in a service. Then, use Handler or runOnUiThread() or
> > > > > something so the background thread can have the UI thread update your
> > > > > TextView.
>
> > > > > --
> > > > > Mark Murphy (a Commons
> > > > > Guy)http://commonsware.com|http://twitter.com/commonsguy
>
> > > > > Android App Developer
> > > > > Training:http://commonsware.com/training.html-Hidequotedtext -
>
> > > > - Show quoted text -- Hide quoted text -
>
> > > - Show quoted text -- Hide quoted text -
>
> > - Show quoted text -- Hide quoted text -
>
> - Show quoted text -
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